91 citations · 427 across the 13 of their papers we have counts for
8 papers · 1 filter
Revealing inverted chirality of hidden domain wall states in multiband systems without topological transition
Seung-Gyo Jeong, Sang-Hoon Han, Tae-Hwan Kim +1
Chirality, a fundamental concept from biological molecules to advanced materials, is prevalent in nature. Yet, its intricate behavior in specific topological systems remains poorly…
Circular dichroism of emergent chiral stacking orders in quasi-one-dimensional charge density waves
Sun-Woo Kim, Hyun-Jung Kim, Sangmo Cheon +1
Chirality-driven optical properties in charge density waves are of fundamental and practical importance. Here, we investigate the interaction between circularly polarized light and…
Topological features of ground states and topological solitons in generalized Su-Schrieffer-Heeger models using generalized time-reversal, particle-hole, and chiral symmetries
Sang-Hoon Han, Seung-Gyo Jeong, Sun-Woo Kim +2
Topological phases and their topological features are enriched by the fundamental time-reversal, particle-hole, and chiral as well as crystalline symmetries. While one-dimensional…
Two-dimensional chiral stacking orders in quasi-one-dimensional charge density waves
Sun-Woo Kim, Hyun-Jung Kim, Sangmo Cheon +1
Chirality manifests in various forms in nature. However, there is no evidence of the chirality in one-dimensional charge density wave (CDW) systems. Here, we have explored the chir…
Switching Chiral Solitons for Algebraic Operation of Topological Quaternary Digits
Tae-Hwan Kim, Sangmo Cheon, Han Woong Yeom
Chirality is ubiquitous in nature and chiral objects in condensed matter are often excited states protected by system's topology. The use of chiral topological excitations to carry…
Transforming a Surface State of Topological Insulator by a Bi Capping Layer
Han Woong Yeom, Sung Hwan Kim, Woo Jong Shin +7
We introduce a dinstint approach to engineer a topologically protected surface state of a topological insulator. By covering the surface of a topological insulator, Bi2Te2Se, with…
Edge and Interfacial States in a 2D Topological Insulator:Bi(111) Bilayer on BiTeSe
Sung Hwan Kim, Kyung-Hwan Jin, Joonbum Park +4
The electronic states of a single Bi(111) bilayer and its edges, suggested as a two dimensional topological insulator, are investigated by scanning tunneling spectroscopy (STS) and…
Topological Solitons versus Non-Solitonic Phase Defects in Quasi-One-Dimensional Charge Density Wave
Tae-Hwan Kim, Han Woong Yeom
We investigated phase defects in a quasi-one-dimensional commensurate charge density wave (CDW) system, an In atomic wire array on Si(111), using low temperature scanning tunneling…